12071422 has 16 divisors (see below), whose sum is σ = 20793600. Its totient is φ = 5198040.

The previous prime is 12071407. The next prime is 12071429. The reversal of 12071422 is 22417021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12071422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12071429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14022 + ... + 14857.

It is an arithmetic number, because the mean of its divisors is an integer number (1299600).

Almost surely, 2^12071422 is an apocalyptic number.

12071422 is a deficient number, since it is larger than the sum of its proper divisors (8722178).

12071422 is a wasteful number, since it uses less digits than its factorization.

12071422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28911.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12071422 is about 3474.3951991678. The cubic root of 12071422 is about 229.3961602437.

Adding to 12071422 its reverse (22417021), we get a palindrome (34488443).

The spelling of 12071422 in words is "twelve million, seventy-one thousand, four hundred twenty-two".